Garbage-destroying furnace.



. To all whom it may concern:

" UNIT A E PATE T QEFICE.

marl n warn: xle Jenn 1,1,. 11002111}, or VANCOUVER, Banish commam,CANADA.

GABBAGE-DESTROYING. FURNACE.

Be it known that we, PETER VVYLIE and JOHN H. HooPER, citizens of theDominion of Canada, residing at, Vancouver, in the Province of BritishColumbia, Canada, have invented a new and useful Garbage-DestroyvingFurnace, of which the following is a specification.

This invention, relates to a garbage destructor furnace of that classwh1ch'1s used to deal with the garbage of a city, and the object hasbeen to provide a means within the furnace for the drying of anymoistmaterial prior to combustion and for the separate combustion ofeasily combustible material. In destructor furnaces of this class, ifthe material as collected is indiscriminately delivered on to its gratea mass of moist material may interfere with the combustion of thefurnace for a considerable time and the duty performed is in consequenceirregular and unsatisfactory. This objection we overcome in theinvention which is the subject of.this application, by providing adrying hearth which is projected over the furnace grate and thecombustion chamber, over and through which hearth the products ofcombustion from the furnacegrate must pass on their way to the chimneyflue, whereby the material on the hearth is dried out and maythereafterbe raked on to the furnace grate beneath.

The invention also provides a separate de-" livery aperture into thecombustiomchamber of the furnace so that any readily combustiblematerial may be deposited directly into it that the flame from it mayconsume any gases and vapors which may pass unconsumed from the grateand drying hearth.

The invention also comprises other features of improvement to whichattention will be drawn in the following specification, reference beingmade to the drawings by which it is accompanied, in which:

Figure 1 is a vertical longitudinal section through the furnace on theline A in Fig. 2. Fig. 2, a sectional plan on the line B in Fig.

Fig. 3, a vertical cross section on the line C; in Fig. 1. Fig. 4 is across section of theseparated from one another by a dividing wall 3 andare provided with separate doors Specification of Lettersl'atent. IPatented June 10, 1913. App i t n fil d N m 28, .2- Sctia 5 ing doors 6for the removal of the ashes.

4 for stoking and ash-pits 5 beneath havl The furnace chambers 7 andtheir ash- I pits are separated from the combustion chamber 8 by a'wall9 which is carried above the grate level to the level of a drying hearth10 wh ch is carried across the width of both furnaces. This dryinghearth 10 extends toward the front over the furnace grates 2 andbackward over the combustion chamber 8 at which end it is provided witha bridge wall .25 projecting a short distance upward toward the roof 12-of the furnace. The hearth is provided with apertures 13 communicatingwith the furnace chamber 7. Closable charging openings 15 and 16 areprovided in the roof 12, over the drying hearth 10 and over thecombustion chamber 8.

Air for-combustion on the grates is delivered .to beneath them throughdelivery apertures 17 in the wall 9 at the back of the ash-pit and theproducts of combustion are normally delivered to the chimney through aflue 21 provided with a damper 22, but a supplementary fine 23 isprovided delivering direct to the chimney at a level above the top ofthe bridge wall 25, which supplementary flue is also provided with adamper. This supplementary fiue is to provide a direct passage for thecold air ad mitted through. either of the chargingopenings 15 or 16 orthe opening 27, when opened, to deliver material or to stoke what is onthe hearth 10, so that the heat of the combustion chamber will not belowered by the passage of cold air through it.

Where the furnace stands alone the air for combustion is derived asshown in Figs.

1, 2 and 3.0f the drawings, through a lateral opening 19 in one of theside walls 20, and passes through a duct 18 in the side wall 20 anddividing wall 9, so as to derive heat from its exposure thereto. Wherethe furnace forms one of a series, the main and supplementary chimneyfiues 21'and 23 deliver into a main flue 21"23 which runs across theends of the furnaces and between these flues is an air duct 28 throughwhich the air for combustion in the several furnaces may be drawn (seeFig. 4) Each furnace chamber 7 is provided with a direct passage 26through the wall 9 to the combustion chamber 8, which passages signed tobe opened when fire is being kindled on the grates 2.

In use, fires having been kindled on the. grates 2, the direct passages26 to the combustion chamber 8 are closed, and the furnacc gases passthrough and over the material which has been charged on to the dryinghearth 10 and the vapors and gases pass therefrom into the combustionchambar 8 in which any light combustible material, such as packingcases, has been kindled, and finally pass to the chimney through themain flue 21. When the material on the drying heart-h 10 has beensufficiently dried out it is raked over the front edge of the hearth onto the grates 2 where it is consumed, and a fresh supply is charged onto the hearth.

As before explained, when the-door 15 1s opened to charge material on tothe hearth material therefrom on to the grates 2, the supplementary fine23 should be opened and as this flue is more direct and at a higherlevel than the main flue the incoming cold air will not pass through thecombustion chamber 8 but will pass direct to the chimney.

The important features of the invention are the drying hearth projectedover the furnace grates and over the combustion chamber; thesupplementary flue direct to the chimney from the level of the dryinghearth; the separate charging apertures'for moist and dry material andthe supplementary closable apertures communicating from the furnacechamber direct to the combustion chamber.

Having now particularly described our invention, we hereby declare thatwhat we claim as new and desire to be protected in by Letters Patent,is:

1. A garbage burning furnace comprising outer walls inclosing aninternal chamber, a wall extending transversely of the chamber andextending from the bottom of the chamber toward the top, a second wallwithin the chamber extending from said transverse wall, in alongitudinal plane, to the front wall, said inner walls dividing saidchamber into three distinct lower sections, a drying hearth consistingof a horior when the door 27 is open to rake the zontal wall extendingfrom one-side to the other of the furnace and located at the upperextremity of said transverse and longitudinal dividing walls, saidhorizontal wall terminating short of the front and back walls of thefurnace to leave passage ways, and furnace grates in the two chambersformed by said transverse and longitudinal dividing walls, said gratesprojecting beneath said drying hearth, and ot't'take flues for saidfurnace, said ofit-ake flues leading from the furnace to the rear of thedrying hearth or transverse wall.

2; A garbage burning furnace comprising an outer Wall 'inclosing achamber, a transverse partition within said chamber and extending fromone side wall to the other and approximately half way up the height ofthe chamber, a correspondingly extending longitudinal partition wall insaid furnace chamber, said transverse and longitudinal walls dividingsaid furnace. chamber into two distinct combustion spaces, grates withinsaid combustion spaces and a drying hearth arched over said grates andsupported by said longitudinal and transverse dividing walls, saidhearth terminating short of the front Wall of the furnace to 3 leave afire and smoke passage and terminating short of the rear wall of thefurnace to leave a corresponding passage, ofi'take fines from thefurnace chamber leading from the furnace chamber to the rear of thedrying hearth or transverse wall and air inlet flues delivering beneaththe grates, said outer wall having a door in its front wall portion inalinement with the top of the drying hearth through which the contentsof the hearth may be raked, and a door in the top of said outer wallthrough which the materials may be deposited on said hearth, said outerwall having charging openings for said grates substantially as shown.

Intestimony whereof we have signed our names to this specification inthe presenc of two subscribing witnesses.

' PETER WYLIE.

JOHN H. HOOPER. \Vitnesses:

ROWLAND BRITTAIN, MAY WHYTE.

